Investigate the biochar process as an alternative. You can also buy biochar for your houseplant needs [0]. Creating that much artifical peat in a small area would be a massive fire hazard but probably could be managed.

"Vertical" or indoor farming is one of those silicon valley tropes. VC lost billions during the last decade and I don't know of a single success story that is still going / profitable. I'm sure after enough time passes people forget and will try again.

[0]: https://rosysoil.com/